Get total permissions from users & roles belongsToMany - php

Question

I have 3 models:
User
Role
Permission
Note:
a user can have direct permissions
a role can have permissions
a user can have roles
I'm trying to get the total permissions a user has, either through their direct permissions or through their roles permissions. So I need to combine both into 1 collection and count the total.
I've set up the belongsToMany relationships for User and Role:
public function permissions()
{
return $this->belongsToMany('App\Permission');
}
How do I do this?

Answer 1

You need to use the hasManyThrough relation
Here is the link to the documentation: Eloquent Documentation
so you would do something like this:
public function permissions()
{
$directPermissions = $this->belongsToMany('App\Permission');
$rolePermissions = $this->hasManyThrough('App\Permissions', 'App\Role');
return $directPermissions->merge($rolePermissions);
}

Answer 2

I figured it out via flatMap.

Answer 3

i am not sure but it will help
open your user model
public function roles()
{
return $this->belongsToMany(Role::class);
}
public function permissions()
{
return $this->belongsToMany(Permission::class);
}
public function hasRole(...$roles)
{
foreach($roles as $role)
{
if($this->roles->contains('name',$role))
{
return true;
}
}
return false;
}
public function hasPermission($permission)
{
return $this->hasPermissionThroughRole($permission) || (bool) $this->permissions->where('name',$permission->name)->count();
}
public function hasPermissionThroughRole($permission)
{
foreach($permission->roles as $role)
{
if($this->roles->contains($role))
{
return true;
}
}
return false;
}
Then open your Role Model and add these
public function permissions()
{
return $this->belongsToMany(Permission::class);
}
public function users()
{
return $this->belongsToMany(User::class);
}
and open your permission model
public function roles()
{
return $this->belongsToMany(Role::class);
}
public function users()
{
return $this->belongsToMany(User::class);
}
and finaly to boot all the permission to roles and user
run the command php artisan make:provider PermissionServiceProvider
open you service provider created newely and
add
use App\Permission;
use Illuminate\Support\Facades\Gate;
add the code under the boot method
Permission::get()->map(function ($permission)
{
Gate::define($permission->name, function ($user) use ($permission)
{
return $user->hasPermission($permission);
});
});
hope it helps if you find any difficulties please comment below